作者：蘇靖雯jingwensu | 来源：互联网 | 2023-01-28 09:25
1> samAlvin..：
尝试
export class RoleService {
options: RequestOptions;
constructor(private http: Http) {
let headers: any = new Headers();
headers.append('Content-Type', 'application/json');
this.optiOns= new RequestOptions({ headers: headers });
}
// ........
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